In science fiction movies, spaceships are often shown dodging through large numbers of closely spaced, boulder-size objects. Which of the following real things in our solar system would look most like such science fiction dangers?
A) the rings of Saturn B) the asteroid belt
C) the Oort cloud D) the atmosphere of Jupiter
A
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The fact that most moons always show the same face to their planet is
A) very surprising and a great mystery. B) a natural consequence of the fact that the entire solar nebula rotated in the same direction. C) explained by the law of conservation of angular momentum. D) a natural consequence of tidal forces acting on the moons. E) a result of the fact that the moons once had atmospheres.
Phobos and Deimos are probably captured comet nuclei
Indicate whether the statement is true or false
If the acceleration vector of an object is directed anti-parallel to the velocity vector, then
A) the object is speeding up. B) the object is slowing down. C) the object is turning. D) the object is at rest. E) this situation would not be physically possible.
A 35-g block of ice at -14°C is dropped into a calorimeter (of negligible heat capacity) containing 400 g of water at 0°C
When the system reaches equilibrium, how much ice is left in the calorimeter? The specific heat of ice is 2090 J/kg ? K, that of water is 4186 J/kg ? K, and the latent heat of fusion of water is 33.5 × 104 J/kg. A) 32 g B) 33 g C) 35 g D) 38 g E) 41 g